/Engine/Plugins/Runtime/GameplayAbilities/Source/GameplayAbilities/Public/Abilities/GameplayAbility.h
Called when the ability is given to an AbilitySystemComponent
virtual void OnGiveAbility ( const [FGameplayAbilityActorInfo](API\Plugins\GameplayAbilities\Abilities\FGameplayAbilityActorInfo) * ActorInfo, const [FGameplayAbilitySpec](API\Plugins\GameplayAbilities\FGameplayAbilitySpec) & Spec )